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NPE-180S2 – Condensing Tankless Water Heater – 150,000 BTU
NPE-180S2 – Condensing Tankless Water Heater – 150,000 BTU
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Navien NPE-180S2Condensing Tankless Water Heater · 150,000 BTU
A high-efficiency condensing tankless water heater built to provide continuous hot water for residential homes, delivering reliable performance with reduced energy costs.
Engineered with dual stainless steel heat exchangers for enhanced durability and ultra condensing performance, the NPE-180S2 is designed for indoor or outdoor wall-hung installation. Approved for direct venting, it offers flexible, space-saving installation options.
Technical specification
| Input range | 15,000 to 150,000 BTU/h |
|---|---|
| Efficiency | 0.96 UEF, ENERGY STAR certified |
| Flow rate | 8.4 GPM at 35°F rise |
| Heat exchangers | Dual stainless steel, ultra condensing |
| Emissions | Low NOx (20 ppm) |
| Fuel | Field convertible — natural gas or propane |
| Installation | Indoor or outdoor, wall-hung |
| Controls | EZNav™ multi-line panel with integrated HotButton™ |
| Cascading | Up to 32 units via Ready-Link system |
| Venting | Direct venting, 2″ PVC up to 60 ft |
| Gas piping | 1/2″ gas pipe capable up to 24 ft |
| Connections | 3/4″ NPT gas; 3/4″ hot and cold water |
| Power | 120V, single phase |
Applications
High-Demand Homes
Residential homes with high hot water demand.
Multi-Bathroom Households
Built for multi-bathroom households.
Compact Wall-Hung
Compact installations needing wall-hung systems.
Venting & Gas Flexibility
Projects requiring venting and gas line flexibility.
Multi-Unit Cascade
Multi-unit cascade setups for greater capacity.
Key features
- Up to 150,000 BTU/h input capacity
- 0.96 UEF and ENERGY STAR certified
- Flow rate: 8.4 GPM at 35°F rise
- Dual stainless steel heat exchangers
- Ultra condensing efficiency
- Low NOx emissions (20 ppm)
- Field convertible gas system (NG/LP)
- Indoor or outdoor wall-hung installation
- EZNav™ control panel with HotButton™
- Cascading capable with up to 32 units via Ready-Link
- Direct venting: 2″ PVC up to 60 feet
- 1/2″ gas pipe capable up to 24 feet
- Gas connection: 3/4″ NPT
- Water connections: 3/4″ hot and cold
- 120V, single phase operation
Product includes
Navien NPE-180S2 condensing tankless water heater. Follow the installation manual, venting requirements, local gas and plumbing codes, and manufacturer instructions.
